<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>
<body>
    <script src="https://unpkg.com/vue@next"></script>

    <div id="app">
        <todo-item></todo-item>
    </div>

    <script>
        const vueOpt = {

        }

        const app = Vue.createApp(vueOpt);

        app.component('todo-item', {
            template:
            `
                <div id="other">
                    <teleport to="#app">
                        <div>A</div>
                    </teleport>

                    <teleport to="#app">
                        <div>B</div>
                    </teleport>
                <div>
            `     
        })

        app.mount('#app')
    </script>
</body>
</html>